Enables ionotropic glutamate receptor binding activity and protease binding activity. Predicted to be involved in several processes, including negative regulation of macromolecule metabolic process; positive regulation of NF-kappaB transcription factor activity; and protein localization to cell periphery. Located in caveola. Part of flotillin complex. Is active in glutamatergic synapse. Is anchored component of presynaptic active zone membrane. Orthologous to human FLOT2 (flotillin 2). [provided by Alliance of Genome Resources, Apr 2022]